Browse website from sub folder.

I have two domains www.mania313.com and mania314.com parked on same IIS folder. Mania313 is perfectly browsing files on root after applying Isapi. While i tried to second mania314 to browse files from mania314 folder present on root. But i need to display
direct domain www.mania314.com in url not mania313.com/mania314 . I have tried from every aspect in documentation but no success looking for your help.